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Author Topic: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions  (Read 84374 times)

Offline Teutonic_Tamer

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #75 on: September 01, 2010, 10:32:20 am »

The enviro regulations don't help either.


ORLY - take it you don't know any motorcyclists who have come a cropper on spilt oil.  FFS, diesel on the road surface is bad enough - we don't want knuts purposely spewing oil onto the road surface too.  I am more than happy about this particlular regulation for closed loop crankcase ventilation.


....Slight misunderstand there, Sean: I'm against those systems which spew the oily residue on the road surface

Ahhhh - OK, sorry, I thought you were dis-ing the the regs!  :ashamed:


and for the closed cans which need manually emptying.  :happy2:

What, just like what a normal oil sump and regular oil changes do?  :evilgrin:  :evilgrin:
Sean - Independant Automotive Engineering Technician (ret'd)
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Offline john_o

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Offline john_o

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #77 on: September 22, 2010, 02:25:25 pm »
and again

http://forums.vwvortex.com/showthread.php?4718884

where saaber quotes

[NOTE : this is merely additional information for you read : neither I, nor mk5golfgtiforum.co.uk accept any responsibility for any damage that may occur from you following any instructions below]

Quote
In terms of longevity and having to fight numerous future issues which can be a by product of the valve deposits, stopping the valve deposits is priority 1A IMO. Checking the cam follower is priority 1B. Making sure you don't run the oil too long (beyond 5k for most users) is priority 2.
IMO these are the 3 major weak spots of the 2.0 FSI design: Valve deposits, cam follower, fuel dilution (others such as DV or pcv failing exist also) Here are some options regarding the valve deposits. I would suggest using an option that eliminates pcv gasses returning to the intake tract but there are lots of proactive ways of dealing with the issue listed here.

Some very easy/low cost preventative options that can help but will not solve the DI valve deposit problems:

1) Use a low volatility and good cleaning oil (cost: additional $5-$10 per oil change)
2) Seafoam, lubro moly valve cleaner, water, etc. through the intake at every oil change (search for dsire thread for a DIY) (cost: $3.50-$10)
3) Regular italian tuneups (VW claims int the engine patent that running at high rpm for over 20 min will burn off deposits but I think it will only help a little) (cost: gas)
4) "in-line" or recirculating catch can (all kinds of flavors out there) (cost: $30-$300)
5) Fuel injector cleaner in the gas to deal with fuel injector deposits (will not help with intake valve or intake deposits) (cost:$5-$10)

More difficult/expensive but more effective "treatment" options. These also help but do not completely solve the problem:

6) BG induction service or similar (cost: $135-$250?)
7) water/meth injection (cost: ???)
8) remove intake manifold and manually clean valves every 50k or so (cost: ????)

Some one-time-fix-the-problem options:

1) bypass pcv and route to exhaust (search for saaber2 thread "bypassing pcv") (cost $125-$175)
2) Run a catch can that vents to atmosphere ((may increase build up acids in oil due to lack of vacuum in evacuating crankcase gasses (but that is unknown)) May have smell or freezing issues?) (cost: $300?)
3) Run a "down tube" or "road tube" that vents to atmosphere ((may increase build up acids in oil due to lack of vacuum in evacuating crankcase gasses (but that is unknown)) (cost: $25 -$50)


Modified by saaber2 at 5:46 PM 1-12-2010
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Offline Teutonic_Tamer

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #78 on: October 17, 2010, 01:28:40 am »
more info

http://golfmkv.com/forums/showpost.php?p=2516446&postcount=97
Yankie forum.  That means poor quality, high sulfur fuels, coupled with low quality mineral oil based non-FSI specific lubricants.  Hardly appropriate to us.
Sean - Independant Automotive Engineering Technician (ret'd)
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Offline Tfsi_Mike

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Re: 2.0TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #79 on: September 06, 2011, 08:46:20 pm »
http://www.wurth.co.uk/product-0893564.php

** Thread resurection...

Did anyone try this ^  Wurth products are very easy to come by here in Germany.

Has anyone had the inlet mani off to inspect or clean the valves?

 :drinking:

Offline Tfsi_Mike

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Re: 2.0TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #80 on: September 06, 2011, 10:32:15 pm »
http://www.wurth.co.uk/product-0893564.php

** Thread resurection...

Did anyone try this ^  Wurth products are very easy to come by here in Germany.

Has anyone had the inlet mani off to inspect or clean the valves?

 :drinking:

Also how big of a job is it to inspect the valves  :happy2:

Offline Nickyboy

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #81 on: September 08, 2011, 10:36:14 pm »
I read it's impossible to spray that stuff over all the valves the TB, only the nearest ones are close enough?

Head off and decoke seems the only way, I hope I am wrong.

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #82 on: September 09, 2011, 07:17:47 am »
Still yet to see a 2.0t in this country with loss of bhp with coked up valves, even a couple years on from this thread started.. Or suffering high emissions... I wouldn't worry personally, but that's your choice :happy2:

Offline Nickyboy

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #83 on: September 09, 2011, 07:43:46 am »
I'm not worried as such, just interested in how the situation can be remedied.

Offline TT-Turbo

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #84 on: September 11, 2011, 05:04:36 pm »
Nice write up this. Made for a very good read, however I can't help but feel paranoid by my standard PCV set-up now!  :grin:

Offline Tfsi_Mike

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #85 on: September 11, 2011, 05:06:23 pm »

for what it costs, the uprated / latest revision PCV would out your mind at rest.  :happy2:

Offline Nickyboy

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #86 on: September 11, 2011, 05:13:28 pm »
How much does it cost?

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #87 on: September 11, 2011, 05:14:52 pm »
Pcv is £35

Offline TT-Turbo

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Re: 2.0 TFSI : PCV / Intake valve clogging : what/why/common solutions
« Reply #88 on: September 11, 2011, 05:15:43 pm »
That's pretty well priced. When was the new updated revision brought out?